<table id="pass1" role="grid">
  <tr>
    <th>AXE</th>
  </tr>
  <tr>
    <td>axe</td>
  </tr>
</table>

<table id="pass2" role="grid">
  <tr>
    <th>AXE</th>
    <th>AXE</th>
  </tr>
  <tr>
    <td>axe</td>
    <td>axe</td>
  </tr>
  <tr></tr>
</table>

<table id="fail1" role="grid">
  <tr>
    <th colspan="2">AXE</th>
  </tr>
  <tr>
    <td>axe</td>
    <td>axe</td>
  </tr>
  <tr></tr>
</table>

<table id="fail2" role="grid">
  <tr>
    <td colspan="2">AXE</td>
  </tr>
  <tr>
    <td>axe</td>
    <td>axe</td>
  </tr>
  <tr></tr>
</table>

<table id="ignored1" role="presentation">
  <tr>
    <td colspan="2">AXE</td>
  </tr>
  <tr>
    <td>axe</td>
    <td>axe</td>
  </tr>
  <tr></tr>
</table>
